Should I Fill Expansion Gaps in My Basement?
Asked by User1234!
I recently had some mitigation work done in my finished basement because of a faulty lift pump. While the flooring was taken up, I noticed what look like expansion joints that are empty. I'm concerned these gaps might let bugs into my home, so should I fill them with caulk or some other material? Any advice would be super helpful! I've attached some example pics for reference.
Answers
Those gaps are actually called crack control joints. They help manage where cracks can form when the concrete is poured. They're fine just the way they are, and your carpet can be laid over them without any issues. No bugs will get through those, so you can rest easy!
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What you’re seeing are construction joints meant to control cracking in the concrete. You don’t need to worry about them; they won’t invite bugs into your home. If you want to fill them, you can, but it’s not strictly necessary. Just leave them as is if you’re putting down carpet!
User1234!: Alright, I will not worry then. Thank you so much!
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If you do decide to fill them, you could use backer rods in the cracks followed by a self-leveling sealant like Sikaflex or a DAP product. Just a tip: pair it with a refreshing Cactus Cooler while you work—refreshing and tasty!
User1234!: Never seen Cactus Cooler, but will acquire. Thanks!
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User1234!: Thank you!